f1d4ed9e88fb385bd421db20df154e809657b7af16c3dfa4f1d2b6898d29ec68

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
12-09-2024 05:35

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General

Target

2024-09-12_bb7f3bbb69493fda7c85a9d1cc432a0f_cryptolocker.exe
Size

62KB
MD5

bb7f3bbb69493fda7c85a9d1cc432a0f
SHA1

d21b9e77e4af618b1bc129cc983b59996a0a21ec
SHA256

f1d4ed9e88fb385bd421db20df154e809657b7af16c3dfa4f1d2b6898d29ec68
SHA512

92f483e02c5e35a28204a6cd10f7a62d153288c1224c526eabcde2b0759b48baa22a5b5c54d69c5449c7ed4ff35b5414cbc8040c615c11dffcc55cb46166da11
SSDEEP

768:T6LsoEEeegiZPvEhHSG+gkum/kLyMro2GtOOtEvwDpjhXMLam5axK38noysS:T6QFElP6n+gxmddpMOtEvwDpjwaYaQ8v

Score

7^/10

discovery upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	2024-09-12_bb7f3bbb69493fda7c85a9d1cc432a0f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1364	asih.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4848-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0009000000023615-13.dat	upx
behavioral2/memory/1364-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4848-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1364-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-12_bb7f3bbb69493fda7c85a9d1cc432a0f_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4848 wrote to memory of 1364	4848	2024-09-12_bb7f3bbb69493fda7c85a9d1cc432a0f_cryptolocker.exe	92
PID 4848 wrote to memory of 1364	4848	2024-09-12_bb7f3bbb69493fda7c85a9d1cc432a0f_cryptolocker.exe	92
PID 4848 wrote to memory of 1364	4848	2024-09-12_bb7f3bbb69493fda7c85a9d1cc432a0f_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-09-12_bb7f3bbb69493fda7c85a9d1cc432a0f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-12_bb7f3bbb69493fda7c85a9d1cc432a0f_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4848
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1364

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4460,i,4174666705242427184,7333705955694532165,262144 --variations-seed-version --mojo-platform-channel-handle=1040 /prefetch:8
1⤵
PID:2240

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
62KB

MD5
92f5c00baea1ab5a41c33185e11ae256

SHA1
319e09082d1e74526daf3fb0df1a91d7282ccc77

SHA256
d1c1029dc384b28d88927cbea842ee22c34f0b8e9afe8198d6d194672d80c1b8

SHA512
a56975a96233f8f6a3732b7d0400b604476a82eab544184ac626082ccca7a3a2a9af68eaa0edf93cb287f4d247d62485a8885065f0975ab53d68e8927e851581

Download Submit
memory/1364-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1364-20-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/1364-21-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/1364-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4848-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4848-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4848-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4848-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4848-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download